mirror of
https://codeberg.org/anoncontributorxmr/monero.git
synced 2024-11-14 23:23:24 +01:00
108 lines
3.3 KiB
C++
108 lines
3.3 KiB
C++
// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
|
||
// All rights reserved.
|
||
//
|
||
// Redistribution and use in source and binary forms, with or without
|
||
// modification, are permitted provided that the following conditions are met:
|
||
// * Redistributions of source code must retain the above copyright
|
||
// notice, this list of conditions and the following disclaimer.
|
||
// * Redistributions in binary form must reproduce the above copyright
|
||
// notice, this list of conditions and the following disclaimer in the
|
||
// documentation and/or other materials provided with the distribution.
|
||
// * Neither the name of the Andrey N. Sabelnikov nor the
|
||
// names of its contributors may be used to endorse or promote products
|
||
// derived from this software without specific prior written permission.
|
||
//
|
||
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
||
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
||
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
||
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
|
||
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
||
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
||
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
||
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
//
|
||
|
||
|
||
#pragma once
|
||
|
||
#include <string>
|
||
#include <boost/algorithm/string/predicate.hpp>
|
||
#include <boost/asio/ip/address_v6.hpp>
|
||
#include "int-util.h"
|
||
|
||
// IP addresses are kept in network byte order
|
||
// Masks below are little endian
|
||
// -> convert from network byte order to host byte order before comparing
|
||
|
||
namespace epee
|
||
{
|
||
namespace net_utils
|
||
{
|
||
|
||
inline
|
||
bool is_ipv6_local(const std::string& ip)
|
||
{
|
||
auto addr = boost::asio::ip::address_v6::from_string(ip);
|
||
|
||
// ipv6 link-local unicast addresses are fe80::/10
|
||
bool is_link_local = addr.is_link_local();
|
||
|
||
auto addr_bytes = addr.to_bytes();
|
||
|
||
// ipv6 unique local unicast addresses start with fc00::/7 -- (fcXX or fdXX)
|
||
bool is_unique_local_unicast = (addr_bytes[0] == 0xfc || addr_bytes[0] == 0xfd);
|
||
|
||
return is_link_local || is_unique_local_unicast;
|
||
}
|
||
|
||
inline
|
||
bool is_ipv6_loopback(const std::string& ip)
|
||
{
|
||
// ipv6 loopback is ::1
|
||
return boost::asio::ip::address_v6::from_string(ip).is_loopback();
|
||
}
|
||
|
||
inline
|
||
bool is_ip_local(uint32_t ip)
|
||
{
|
||
ip = SWAP32LE(ip);
|
||
/*
|
||
local ip area
|
||
10.0.0.0 <20> 10.255.255.255
|
||
172.16.0.0 <20> 172.31.255.255
|
||
192.168.0.0 <20> 192.168.255.255
|
||
*/
|
||
if( (ip | 0xffffff00) == 0xffffff0a)
|
||
return true;
|
||
|
||
if( (ip | 0xffff0000) == 0xffffa8c0)
|
||
return true;
|
||
|
||
if( (ip | 0xffffff00) == 0xffffffac)
|
||
{
|
||
uint32_t second_num = (ip >> 8) & 0xff;
|
||
if(second_num >= 16 && second_num <= 31 )
|
||
return true;
|
||
}
|
||
return false;
|
||
}
|
||
inline
|
||
bool is_ip_loopback(uint32_t ip)
|
||
{
|
||
ip = SWAP32LE(ip);
|
||
if( (ip | 0xffffff00) == 0xffffff7f)
|
||
return true;
|
||
//MAKE_IP
|
||
/*
|
||
loopback ip
|
||
127.0.0.0 <20> 127.255.255.255
|
||
*/
|
||
return false;
|
||
}
|
||
|
||
}
|
||
}
|
||
|